cef/libcef/browser/net/net_util.h
Marshall Greenblatt 241941a44a Move message routing from CefBrowser to CefFrame (see issue #2498).
This change moves the SendProcessMessage method from CefBrowser to CefFrame and
adds CefBrowser parameters to OnProcessMessageReceived and
OnDraggableRegionsChanged.

The internal implementation has changed as follows:
- Frame IDs are now a 64-bit combination of the 32-bit render_process_id and
  render_routing_id values that uniquely identify a RenderFrameHost (RFH).
- CefFrameHostImpl objects are now managed by CefBrowserInfo with life span tied
  to RFH expectations. Specifically, a CefFrameHostImpl object representing a
  sub-frame will be created when a RenderFrame is created in the renderer
  process and detached when the associated RenderFrame is deleted or the
  renderer process in which it runs has died.
- The CefFrameHostImpl object representing the main frame will always be valid
  but the underlying RFH (and associated frame ID) may change over time as a
  result of cross-origin navigations. Despite these changes calling LoadURL on
  the main frame object in the browser process will always navigate as expected.
- Speculative RFHs, which may be created as a result of a cross-origin
  navigation and discarded if that navigation is not committed, are now handled
  correctly (e.g. ignored in most cases until they're committed).
- It is less likely, but still possible, to receive a CefFrame object with an
  invalid frame ID (ID < 0). This can happen in cases where a RFH has not yet
  been created for a sub-frame. For example, when OnBeforeBrowse is called
  before initiating navigation in a previously nonexisting sub-frame.

To test: All tests pass with NetworkService enabled and disabled.
2019-05-29 17:44:56 +03:00

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// Copyright (c) 2017 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
#ifndef CEF_LIBCEF_BROWSER_NET_NET_UTIL_H_
#define CEF_LIBCEF_BROWSER_NET_NET_UTIL_H_
#pragma once
#include "include/cef_resource_request_handler.h"
#include "libcef/common/request_impl.h"
#include "content/public/browser/resource_request_info.h"
namespace net {
class URLRequest;
}
class GURL;
class CefBrowserHostImpl;
class CefBrowserInfo;
namespace net_util {
// Returns true if |request| is handled internally and should not be exposed via
// the CEF API.
bool IsInternalRequest(const net::URLRequest* request);
// Returns the browser associated with the specified URLRequest.
CefRefPtr<CefBrowserHostImpl> GetBrowserForRequest(
const net::URLRequest* request);
// Returns the frame associated with the specified URLRequest.
CefRefPtr<CefFrame> GetFrameForRequest(
scoped_refptr<CefBrowserInfo> browser_info,
const net::URLRequest* request);
// Returns the appropriate CefResourceRequestHandler as determined by the
// associated CefBrowser/CefRequestHandler and/or CefRequestContextHandler, if
// any. The out-params will be nullptr if no handler is returned. Otherwise,
// the |cef_request| parameter will be set based on the contents of |request|
// (read-only by default), and the |cef_browser| and |cef_frame| parameters
// will be set if the request is associated with a browser.
CefRefPtr<CefResourceRequestHandler> GetResourceRequestHandler(
const net::URLRequest* request,
CefRefPtr<CefRequestImpl>& cef_request,
CefRefPtr<CefBrowser>& cef_browser,
CefRefPtr<CefFrame>& cef_frame);
void HandleExternalProtocol(
CefRefPtr<CefRequestImpl> request,
const content::ResourceRequestInfo::WebContentsGetter& web_contents_getter);
} // namespace net_util
#endif // CEF_LIBCEF_BROWSER_NET_NET_UTIL_H_